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Biopsy apparatus and operation method thereof

a biopsy apparatus and operation method technology, applied in the field of biopsy apparatus and operation method thereof, can solve the problems of troublesome calibration between the tomosynthesis coordinate system and the biopsy coordinate system with a high degree of accuracy, and achieve the effect of high degree of accuracy

Active Publication Date: 2018-10-30
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]An object of the present invention is to provide a biopsy apparatus capable of readily associating a tomosynthesis coordinate system with a biopsy coordinate system and inserting a biopsy needle with a high degree of accuracy based on a position of a target designated based on the tomosynthesis image, and an operation method of the biopsy apparatus.
[0026]According to the present invention, the position of the target designated based on the tomosynthesis image is determined as the first designated position, the first designated position is virtually projected toward the radiation detector from two calibrated-stereotactic tube positions which have been calibrated into the tomosynthesis coordinate system so as to obtain the two projection positions, and the first designated position is converted into the second designated position in the stereotactic coordinate system based on the stereotactic tube positions and the projection positions. Therefore, it is possible to readily associate the tomosynthesis coordinate system with the biopsy coordinate system, such that the position of the target designated based on the tomosynthesis image is coincident with the position to be inserted by the biopsy needle with a high degree of accuracy.

Problems solved by technology

However, since the degree of deviation practically acceptable is as small as at most about 1 mm, it is difficult to achieve the acceptable degree of accuracy by the mechanical adjustment of the movement mechanism of the tube and the biopsy needle and the like.
An error in setting each of the positions of the tube results in deviation of the tomosynthesis coordinate system.
As described above, the calibration between the tomosynthesis coordinate system and the biopsy coordinate system with a high degree of accuracy is troublesome and a burden to a user.

Method used

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  • Biopsy apparatus and operation method thereof
  • Biopsy apparatus and operation method thereof

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first embodiment

[0043]As shown in FIG. 1, a biopsy apparatus 10 includes an imaging unit 12, a base 14, and a personal computer (PC) 16. The imaging unit 12 captures an image of a breast N of a subject W in an upright posture using radiation (e.g., X-rays). The base 14 supports the imaging unit 12 from a rear side of the biopsy apparatus 10. The biopsy apparatus 10 consists of a mammography apparatus for capturing an image of a breast N as a subject to be examined, to which a biopsy function is added, for example.

[0044]The PC 16 includes a control part 16a consisting of a CPU (Central Processing Unit) and the like, a memory part 16b consisting of a RAM (Random Access Memory), a ROM (Read Only Memory) and the like, an operation part 16c consisting of a keyboard, a mouse, and the like, and a display part 16d consisting of LCD (Liquid Crystal Display) and the like. The PC 16 controls an overall operation of the biopsy apparatus 10, generates an image, displays an image, and receives instructions for o...

second embodiment

[0099]According to the above embodiment, the control part 16a controls the rotation shaft driver 50 so as to set the position of the tube 24a of the radiation source 24 (i.e., the stereotactic tube positions PS1 and PS2 and the tomosynthesis tube positions PT1 to PTN) and each of the reconstruction processor 61 and the target position conversion section 64 performs the processing based on the position information of the tube 24a set by the control part 16a. However, the processing may be performed based on a value obtained by correcting the position information of the tube 24a with use of setting error information of the tube 24a.

[0100]According to a second embodiment, as shown in FIG. 15, the control part 16a includes a tube position information correction section 67. The tube position information correction section 67 holds the setting error information of the tube 24a, and corrects the set position of the tube 24a (i.e., the stereotactic tube position PS1 and PS2 and the tomosyn...

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Abstract

A position of a target designated based on a tomosynthesis image is identified as a first designated position. The first designated position is virtually projected to a radiation detector from two calibrated-stereotactic tube positions which have been calibrated into a tomosynthesis coordinate system so as to obtain two projection positions. The first designated position is converted into a second designated position in a stereotactic coordinate system based on stereotactic tube positions and the projection positions. A biopsy needle is inserted into a subject to be examined based on the second designated position. The biopsy needle is driven based on a biopsy coordinate system calibrated with respect to the stereotactic coordinate system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2014-261272, filed Dec. 24, 2014. The above application is hereby expressly incorporated by reference, in its entirety, into the present application.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a biopsy apparatus for identifying a lesion position based on a tomosynthesis image and extracting a piece of tissue from the lesion position, and an operation method of the biopsy apparatus.[0004]2. Description Related to the Prior Art[0005]A biopsy apparatus intended for extracting a piece of tissue from a lesion (tumor or calcification) of a patient and conducting a detailed examination for medical diagnosis has been developed. The biopsy apparatus inserts a hollow biopsy needle into a subject to be examined (breast or the like) of a patient, so as to extract a piece of tissue which enters into the ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61B6/00A61B6/12A61B6/04A61B10/02A61B6/02A61B34/20A61B10/04
CPCA61B6/025A61B6/022A61B6/0414A61B6/12A61B6/461A61B6/5223A61B6/582A61B10/0233A61B34/20A61B6/502A61B2010/045A61B2010/0208A61B10/02
Inventor TOBA, HIROYUKI
Owner FUJIFILM CORP